Okay, I'm going to respond to the two of you, so bare with me.
BlueFlyer:
First of all, her being a bartender clears up the situation a little more. The fact that you have SOME chemistry works in your favor and that you got that far. That being said, I know what you mean about her having only other nights off.
But here's the problem... trust me, you're definitely NOT the only guy vying for her attention right now. Trust me, she has at least 15 to 20 guys a WEEK (and I use the term week LOOSELY) actively REALLY hitting on her.
Yes, your reaction could have been better, BUT if she said she wanted to see you on one of her off-nights, then it means that you definitely made some sort of impression on her. But next time, if you go in for a kiss and someone turns their head, don't say that you agree that it was premature... this is almost the same as apologizing, BUT at least you didn't turn all AFC and start pouting.
Had I known she was a bartender, I'd tell you: YES, make the counter offer. I know you're afraid that switching the date might "cool things off", but in reality, you don't want to always be seeing her on her schedule... remember, you are a man and you have things to do as well. You can't have this "I have to adjust to HER" from the get-go. Show her that you're a man and if things "cool off" then maybe it's for the best.
The one thing I will MOST definitely say to you right now is... don't go to that bar this week. I used to work with a female bartender side-by-side and the men she was least attracted to were the stalkers.
When you do call her, give her the counter-offer for Thursday, if she's really interested BUT will be WORKING, ask her what days she has off and then say that you have only ONE of those days off and that you can go do something together then. But like I said, she already has control of the situation, and she's used to it by now with guys (she IS a bartender) so take a little control back and don't do things her way all the time.
And remember, if it doesn't work out with her, there's millions more to choose from and this one is just practice.
garruk: Phone fluff. Just "Hey, how are you"... and then add something that happened to you, something interesting, something that stands out... and maybe something that can transition into asking her out. You don't want to just call and be: "Hi, this is Kailex, let's go out on Friday."
Women are emotional and sometimes it takes them a minute or two to remember what kind of emotional attachment comes with talking to you. If it were to guy friends talking together, that above conversation is perfect, but you want to get that lady to warm up to you again, but you don't want to linger. Remember, you're trying to leave all the awesome conversations for when you two are on the actual date.
In Blue's case, what he'd do is the female's version of letting the girl down softly. You don't want to call and just be very blunt and say: Hey, it's Blue, I have to cancel but I can go out on Thursday.
He can just have an opener, talk about something and then transition smoothly into: Well, about Wednesday, I need to reschedule...
Granted, there are guys who will tell you to be very direct and immediately cut into the "Hey, I have plans so I can't go on Wednesday" part... but I try to be a little more suave with it, show that you're busy but not that you're TOO much of a jerk.
And my other piece of advice is: Stop texting so much. Yes, it can help, but the more you text, the more it's hurting your game overall. Leave conversations for dates/going out. Text/Phone calls should be minimal and I'm sure Rollo has that covered in most of his posts, they serve as a medium. They are NOT the centerpiece of getting to know someone.